Its clearly a bad idea yes?
I have just started sleeping with ExP, even though we really do not get on and haven't been able to have a conversation for three years.
We are both single, we used to have excellent sex (pretty much the only good thing in our entire history) and somehow the other night we bumped into eachother and it happened.
Now, I cant see this ending well... Is it possible to just truly be 'friends with benefits' or whatever people call it now? Obviously things are hugely complicated by the fact we have a child together.